EasyFilesConverter

IP subnet calculator

Calculate the network, broadcast, mask, wildcard and usable host range of an IPv4 address with CIDR or a subnet mask.

Free · No sign-up · Your files are processed on your device and never uploaded
How to use IP subnet calculator
  1. Fill in a few fields…
    1
    Paste or type
    Put your content in the box - or try the example.
  2. Result appears instantly
    2
    Watch the result
    Pick the options you want - the defaults suit most files.
  3. TXTCopy the result
    3
    Download the result
    Ready in seconds. Your file never left your device.
Features
  • Live result as you type.
  • Copy the result in one click.
  • No sign-up.
Free and private
Everything runs in your browser. Nothing you paste is uploaded, logged or stored.
Questions
How many hosts in a /24?
254 usable addresses (256 minus network and broadcast).
Is it free?
Yes - free and unlimited, with no sign-up and no watermark.
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